Wheel rim



A. CONT] May 24, 1932.

WHEEL RIM Filed July 2, 192

" INVENTOR ATTO R N EY WITNESS! placing of an inflated tire and its shoe on the Patented May 24, 1932 UNIED :sTArs; PATQNT- 'QF'FICEP 4 ADAM coma, or oE OljI i V i I Application filed'J ily 2, 1927.,seria1 No." eoa u, l I

portion of the rim showingther wedge shape i A by which 'the expansion is effected,

Figure 3 is a similar View to that of'Figure v 2 7 showing the auxiliary latch open.

This invention relates to an improved expanding ring-for a demountable pneumatic tire, the object being to facilitate the retire carrying rim of a vehicle, such as an automobile; The object is to simplify the replacement of a deflated tire by a spare one.

In carrying out the invention I provide the usual form of split rim in which the in-' W flated shoe is carried, with tapered edges at 7 ends transversely disposed to receive a dovethe split portion ofthe rim both across and parallel with the axis of rotation, the transverse taper being gradual as of a gentle. wedge shape up to a point near the opposite edge where the rim forms an obtuse angular bend adapted when therim is expanded to be put by the pneumatic tire under compression to form a snug fit with the meeting edges. An auxiliary feature of the invention is a pivoted latch pivotally connected with one of the split rim edges with an intermediate longitudinal slot to span a pin or boss on a wedge engaging the tapered rim edgesln dove-tail grooves, and the free end of the? latch having a slot to nest around a boss or pin on the other end of the rim; p

The invention therefore comprises a deinountabl-e transversely spli t rim having its tail wedge, and being adapted for expansionby said wedge within an uninflated pneumatic tire and when the tire is inflated, for replacement on a wheel, said rim having its split of a conformation to lock with the scribed and will be definitelyindicated in the I operation.

in V T igure 1 is a face view of an expanded rim e t In mounting the rim of thefelly the radial wedge, thereby facilitating mounting and demounting- It comprises other features consisting of a pivoted latch which acts as an auxiliary look when the rim is expanded and which maintains the them proper condition whencarried as a spare. 1 It comprises other more specific features, the novelty of which will be more fully hereinafter deappended claim.

In p y ng drawings illustratthe A invention provided with my improvements as mounted on awheel. i f

Figure 2 isadetailed view in 'plan of a Figure 4L is a detail sectional view across the plane of the wedge and auxiliary latch.

- Figure 5 is a detail view'of'the wedge and a lug holding it in place; Referring now in detail to the drawings, 1

nertube of which is filled withcompressed represents an inflated pneumatic tire, the in? i and the outer shoe 1 is of a thick'molded vulcanized; product adapted to "be 3 sprung 'o'vera split steelring 2 usually of 'channel form with side flanges to retain thetire in place. In carrying out my improvements-I provide sloping end walls atthe split, as inwall forming an obtuse angle: with the. sides meeting edges. Thus when the l rim is will fully expanded position the edges at 5Eand' at 3, 3a form a continuousbroken: line interdicated at 3a, the taper on 'each end 7 i cepted by a wedge 56." Thelongitudinal edges of'the wedge are tapered as indicated I at'7, Twin-Figure 2 and the key wedge 6 which slopes 'cOincidently with the edges 3,

3a carriesangular-grooves 9, 9a which form a dove-tailfit with the tapered edges of the Y split, which willbe, clearly apparent from Figure 4:. In mountinga; tire,therim' is contracted as'iusual' and aideflatedtire, is

placed over, it ,an d thefedges of the split I brought intoproxlmity, as seen in Figure 8,

and the wedgefi applied to thelatch 101with the wedge pin in theslotand the wedge is eationlof the lugs in the usual way, andthe.

lugs fare .vap'plied thereby completing the g lugs 11 and '11a,.of which there arensually a plurality distributed v uniformly along the [driven in, thereby expanding the rim edges to position of Figure 2, and theflatch locks on the pine, thus completing the mounting; V

The tire is thengpumped up, and can-beusedj" as a spare ormounted on the wheel by appli vents any possibledisplacement, especially";;. H

l no- I I L 7 1,860,308

peripheryof the wheehare removed from the- I bolts carried by the felly and when replaced lock the rim in place. In replacing a new tire inplaee of a deflated one, an uninflatedspare is slipped on the demountable rim of the ,Wheeluntil proper alignmentrofthe tire v is effected. 'When' the wedge is fully'seated in' place the edges 4, 4a of the flange will coincide and spring int-o placelooking with one another. During the time that the wedgeis beingdriven to its seat the pivot'ed latch 10 is carried by the piniof theowedge extending through'the slot to sucha position i [that the slotted end of the latch locks over the pin 4. -The'lug 11 is perforated in a similar manner to the lugs 11a, passes: over a stnd bolt carried by the telly andclamps against the wedge 6. v This as well. as thecooperating lugs. 114,. etc. are replaced and the Z0 nnts screwed: hoine,= thereb;y locking the wedgesin position. If the tire should be v come deflated for anyreason and a new spare "is required it is but-a matter of a few f as H mome'ntsidelayto'vput on a new'tire, in doin gawhich the lugs 11, 110, etc., aretaken 0&-

and an uninflatedtire slipped on, when the H latch. 10 may be pushed by the wedge-into o place and latohed, perniittlng the tire t'o be Q1 1 V maintained in an'inflated' condition while 3,0 l

being-carriedas a spare.

' Havingthus described my invention,'what ilelaiin'asEnew anddesire tosecl re'by Letters I Patent is yond the beveled confronting ends and adapted tolabutleach other to maintain said beveled 9 endjsfrelatively'wide apart, said beveled ends having tapered ;edges of V shape throughout a their-extent, a wedge conforming to the-gap betweenzthe beveled endsto be received there;

in for abutting said extensions and having channels inoppos it'e edges, to' seat the tapered f p '7 portions of'said'end edges, and a l'atchpiv v oted toione' beveled end'and having a slidable connection ,with'the wedge and also detach-v ably'engageable with-the other beveled end vfor retaining the. wedgein the gap and" the latter n'nited iwith the beveled {ends.; 

